Rollen Chunk 7: Benutzerverwaltung und Sicherung strikt Admin-only

src/lib/api-client.ts

@@ -272,3 +272,42 @@ export function decideVacation(
     body: JSON.stringify({ action }),
   });
 }
+
+export interface ManagedUser {
+  id: string;
+  name: string;
+  email: string;
+  role: "admin" | "teamleiter" | "benutzer";
+}
+
+export function listUsers(): Promise<{ users: ManagedUser[] }> {
+  return request("/api/users");
+}
+
+export function createUser(input: {
+  name: string;
+  email: string;
+  password: string;
+  role: "admin" | "teamleiter" | "benutzer";
+}): Promise<{ user: ManagedUser }> {
+  return request("/api/users", {
+    method: "POST",
+    body: JSON.stringify(input),
+  });
+}
+
+export function setUserRole(
+  id: string,
+  role: "admin" | "teamleiter" | "benutzer",
+): Promise<{ user: { id: string; role: string } }> {
+  return request(`/api/users/${encodeURIComponent(id)}`, {
+    method: "PUT",
+    body: JSON.stringify({ role }),
+  });
+}
+
+export function deleteUser(id: string): Promise<{ deleted: boolean }> {
+  return request(`/api/users/${encodeURIComponent(id)}`, {
+    method: "DELETE",
+  });
+}